lib/tmpfiles.d: symlink networks, protocols, rpc and services into /etc - #44
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glibc resolves these through the usrfiles NSS module, so nothing in /etc is needed for getprotobyname() and friends to work. Anything that reads the paths directly still breaks though: statically linked binaries open /etc/protocols themselves, and a hostPath volume of type File keeps kubelet from starting the pod at all when the file is missing, which is what azure-npm hits on Flatcar. Link them from /usr/share/baselayout the same way /etc/nsswitch.conf already is. tmpfiles leaves an existing path alone, so a copy the user put there keeps winning. Fixes flatcar/Flatcar#1852 Signed-off-by: Satwik Sai Prakash Sahoo <sahoospsatwik@gmail.com>
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Thanks, created a PR flatcar/scripts#4190, running CI. |
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Pulls in flatcar/baselayout#44. Signed-off-by: Dongsu Park <dongsu@dpark.io>
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/etc/protocols,/etc/services,/etc/rpcand/etc/networksare not on disk in flatcar. Glibc finds them under/usr/share/baselayout/through theusrfilesNSS module wired up innsswitch.conf, sogetprotobyname()and friends work fine and nothing looks broken.Anything that opens those paths directly does break though. Statically linked binaries and go programs parse
/etc/protocolsthemselves, and kubernetes workloads that mount the file as ahostPathwithtype: Filedo not even start, because kubelet requires the path to exist on the host, this is what azure-npm runs into.So this PR adds four
Llines tobaselayout-etc.confpointing back at the copies in/usr/share/baselayout/, exactly how/etc/nsswitch.confand/etc/issueare already handled.Lleaves an existing path alone, so anyone who put their own file in/etckeeps it.